FKIE_CVE-2022-50076

Vulnerability from fkie_nvd - Published: 2025-06-18 11:15 - Updated: 2025-11-17 19:27
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: cifs: Fix memory leak on the deferred close xfstests on smb21 report kmemleak as below: unreferenced object 0xffff8881767d6200 (size 64): comm "xfs_io", pid 1284, jiffies 4294777434 (age 20.789s) hex dump (first 32 bytes): 80 5a d0 11 81 88 ff ff 78 8a aa 63 81 88 ff ff .Z......x..c.... 00 71 99 76 81 88 ff ff 00 00 00 00 00 00 00 00 .q.v............ backtrace: [<00000000ad04e6ea>] cifs_close+0x92/0x2c0 [<0000000028b93c82>] __fput+0xff/0x3f0 [<00000000d8116851>] task_work_run+0x85/0xc0 [<0000000027e14f9e>] do_exit+0x5e5/0x1240 [<00000000fb492b95>] do_group_exit+0x58/0xe0 [<00000000129a32d9>] __x64_sys_exit_group+0x28/0x30 [<00000000e3f7d8e9>] do_syscall_64+0x35/0x80 [<00000000102e8a0b>] entry_SYSCALL_64_after_hwframe+0x46/0xb0 When cancel the deferred close work, we should also cleanup the struct cifs_deferred_close.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/860efae127888ae535bc4eda1b7f27642727c69ePatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ca08d0eac020d48a3141dbec0a3cf64fbdb17cdePatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel 5.14
linux linux_kernel 5.14
linux linux_kernel 5.14
linux linux_kernel 6.0
To clipboard 

{
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
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              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "A6734076-32F7-4DF9-9522-F5BC3760B69A",
              "versionEndExcluding": "5.14",
              "versionStartIncluding": "5.13.12",
              "vulnerable": true
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ncifs: Fix memory leak on the deferred close\n\nxfstests on smb21 report kmemleak as below:\n\n  unreferenced object 0xffff8881767d6200 (size 64):\n    comm \"xfs_io\", pid 1284, jiffies 4294777434 (age 20.789s)\n    hex dump (first 32 bytes):\n      80 5a d0 11 81 88 ff ff 78 8a aa 63 81 88 ff ff  .Z......x..c....\n      00 71 99 76 81 88 ff ff 00 00 00 00 00 00 00 00  .q.v............\n    backtrace:\n      [\u003c00000000ad04e6ea\u003e] cifs_close+0x92/0x2c0\n      [\u003c0000000028b93c82\u003e] __fput+0xff/0x3f0\n      [\u003c00000000d8116851\u003e] task_work_run+0x85/0xc0\n      [\u003c0000000027e14f9e\u003e] do_exit+0x5e5/0x1240\n      [\u003c00000000fb492b95\u003e] do_group_exit+0x58/0xe0\n      [\u003c00000000129a32d9\u003e] __x64_sys_exit_group+0x28/0x30\n      [\u003c00000000e3f7d8e9\u003e] do_syscall_64+0x35/0x80\n      [\u003c00000000102e8a0b\u003e] entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nWhen cancel the deferred close work, we should also cleanup the struct\ncifs_deferred_close."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: cifs: Se corrige la p\u00e9rdida de memoria en el cierre diferido. xfstests en smb21 informa kmemleak como se muestra a continuaci\u00f3n: objeto sin referencia 0xffff8881767d6200 (tama\u00f1o 64): comm \"xfs_io\", pid 1284, jiffies 4294777434 (edad 20,789 s) volcado hexadecimal (primeros 32 bytes): 80 5a d0 11 81 88 ff ff 78 8a aa 63 81 88 ff ff .Z......x..c.... 00 71 99 76 81 88 ff ff 00 00 00 00 00 00 00 00 .qv........... backtrace: [\u0026lt;00000000ad04e6ea\u0026gt;] cifs_close+0x92/0x2c0 [\u0026lt;0000000028b93c82\u0026gt;] __fput+0xff/0x3f0 [\u0026lt;00000000d8116851\u0026gt;] task_work_run+0x85/0xc0 [\u0026lt;0000000027e14f9e\u0026gt;] do_exit+0x5e5/0x1240 [\u0026lt;00000000fb492b95\u0026gt;] do_group_exit+0x58/0xe0 [\u0026lt;00000000129a32d9\u0026gt;] __x64_sys_exit_group+0x28/0x30 [\u0026lt;00000000e3f7d8e9\u0026gt;] do_syscall_64+0x35/0x80 [\u0026lt;00000000102e8a0b\u0026gt;] entry_SYSCALL_64_after_hwframe+0x46/0xb0 Cuando cancelamos el trabajo de cierre diferido, tambi\u00e9n debemos limpiar la estructura cifs_deferred_close."
    }
  ],
  "id": "CVE-2022-50076",
  "lastModified": "2025-11-17T19:27:41.060",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2025-06-18T11:15:36.513",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
      ],
      "url": "https://git.kernel.org/stable/c/60b6d38add7b9c17d6e5d49ee8e930ea1a5650c5"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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      "url": "https://git.kernel.org/stable/c/ca08d0eac020d48a3141dbec0a3cf64fbdb17cde"
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-401"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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